(RI85) Voltage Tubular Resistors Break Through 800 Wattage in High Power Applications. Direct Electronics presenting Token brand RI85 series has been developed to provide design engineers with high quality, high power, high voltage dividers for use in sophisticated system. The RI85 resistors make using proprietary thick film metal glaze resistive element and Serpentine Pattern Design which provides ideal cost efficient, stability, high power and high voltage characteristics for a wide range of measurement, voltage divider circuits, and control functions in high voltage power electronics applications. The RI85 non-inductive Power Voltage Resistor is RoHS compliant and lead free. For customed designs, tighter tolerances, non-standard technical requirements, or custom special applications, please feel free to contact us.
Features : |
| Dimensions & Specification |
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| Type | Power Rating |
Resistance Value (Ω) |
Resistance Tolerance |
Temperature Coefficient (PPM/°C) |
Dimensions (Unit: mm) | Max working voltage |
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| ΦD±2 | Φd±2 | L1±5 | L2±5 | T±1 | ||||||
| RI85 | 200W | 100K~100G | 10% (K) 20% (M) |
≤100 | 28 | 15 | 185 | 200 | 10.5 | 50KV |
| RI85 | 500W | 100K~500G | ≤100 | 34 | 20 | 205 | 220 | 15 | 50KV | |
| RI85 | 800W | 100K~1T | ≤100 | 55 | 40 | 205 | 220 | 15 | 100KV | |
| Remark: Rated Continuous Working Voltage (RCWV) shall be determined from
RCWV = square root (power rating × resistance value) or Max Working Voltage listed above, whichever less. |
| Power Derating Curve |
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| Performance Specifications |
| Test Item | Test Methods | Characteristics |
| Moisture resistance | MIL Std. 202, method 106 (IEC68-2-3) | ΔR/R≤±0.1% typ., 0.25% Max. |
| Insulation resistance | 500V 25°C 75% relative humidity | 10GΩ Min. | Dielectric strength | 25°C 75% relative humidity | 1000V Min. |
| Overload | 1.5×Pnom. 5 sec (do not exceed max. voltage) | ΔR/R≤±0.1% typ., 0.25% Max. |
| Thermal shock | MIL Std. 202, method 107 Cond. C (IEC68-2-14) | ΔR/R≤±0.1% typ., 0.2% Max. |
| Load life | 1000h at rated power (IEC115-1) | ΔR/R≤±0.1% typ., 0.25% Max. |
| The Advantages of Non-Inductance & Serpentine Pattern |
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Non-Inductive Performance:
- RI85 Non-Inductive Design which uses a serpentine resistive pattern that offers for zigzagging lines to carry current in opposite directions, thereby achieving maximum neutralization of flux fields over the entire length of the resistor.
- This efficient non-inductive construction without derating of any performance advantages is ideal for applications where high frequency is required.
Serpentine Pattern Screen Printing Design:
- The RI85 High Voltage Power Resistor combines Token's Non-Inductive serpentine pattern, high thru-put screen printed silicone coating.
- The alignment of the gap in the serpentine resistor pattern with the gap in the coating pattern provides a complete encapsulation of the resistor element.
- 3. The cap and lead assemblies are pressed onto the resistor core, finishing the resistor and providing rugged terminal attachment.
| Specification Download |
Download Tubular High Voltage Resistors Datasheet (434KB) PDF.
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| Order Codes |
| RI85 | 200W | 1M | K | ||||
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| Direct Electronics Tech. Co., Ltd. Taiwan Tel:+886-2-29810109 Fax:+886-2-29887487 China Tel:+86-755-26055363 Fax:+86-755-26055365 |